Circle Properties

Property 1 : Angle subtended at the Centre of a circle is twice the angle subtended at the circumference. Property2 : Angles subtended by an arc in the same segment of a circle are equal. Property 3 : The opposite angles in a cyclic quadrilateral add up to 180 degrees- the angles are supplementary. Property4 : The angle in a semi-circle is a right angle. Property 5: The angle between a tangent and the radius drawn to the point of contact is 90 degrees. Property6 : From any point outside a circle just two tangents to the circle may be drawn and they are of equal length.

Property 1 : Angle subtended at the Centre of a circle is twice the angle subtended at the circumference.

Property2 :Angles subtended by an arc in the same segment of a circle are equal.

Interactive graph : 1

Interactive Graph : 2

Property 3 :

The opposite angles in a cyclic quadrilateral add up to 180 degrees- the angles are supplementary.

Property 4: The angle in a semi-circle is a right angle

Property 5: The angle between a tangent and the radius drawn to the point of contact is 90 degrees.

Property 6 : From any point outside a circle just two tangents to the circle may be drawn and they are of equal length.